UniChat

Free lightweight native Android client for Telegram, Signal and WhatsApp.

Link one account or all three: their chats share one list, one local database and the same screens, with a different accent color for each.

How each one signs in:

• Telegram — standalone via TDLib
• Signal — standalone or linked as a second device via signalmeow
• WhatsApp — companion device (the official WhatsApp app must be installed on the device) via whatsmeow

Features

• Every account in one chat list, with avatars, snippets, timestamps and unread badges
• Text, photos, videos, voice messages (play and record), documents, stickers (view only), locations and contact cards; bold and italic for text
• Voice messages play in sequence even when the screen is off
• Search chats from the list; search messages inside a chat, going further back on demand
• Link previews with title, description and picture
• Swipe through a chat's photos in the viewer, pinch to zoom
• Voice notes play at 1x, 1.5x or 2x, and keep their place when you scroll away
• Your own notes-to-self sit at the top when you pick where to forward
• Tap a message for its actions: reply, react, copy, forward, share, save to Downloads, edit, delete. Tap a reply's quote to jump to the original
• Forward across services — a WhatsApp photo into a Telegram chat, and back
• Select several messages (long-press, then drag or tap) to forward, copy or delete them together
• View-once photos and videos, where the service allows them
• Appears in Android's share sheet: send text, photos or any file from other apps straight into a chat
• Notifications per chat for all three services, with sender, avatar and preview, quiet for the chat on screen and for muted chats
• Export a chat to a text file; mute, delete or open a chat on your other account
• Edit your profile — picture, name and About — from the ⋮ menu. With more than one account linked, account actions ask which one
• Privacy settings per account: last seen and online, profile picture, About, read receipts, and being findable by your number
• Presence on both screens: the chat list puts a green dot on the avatar of whoever is online and swaps the snippet for "typing… / recording voice…" as it happens; the chat itself adds last seen
• Share contact's avatar
• Light and dark themes, or follow the device; the dark one is true black for OLED. Font size is yours to set too
• Local SQLite history shared by the three services, and a foreground service to stay connected, with a hidden status-bar icon
• No ads, no telemetry, no bullshit

Limitations

• No voice or video calls; a call you get shows as a line in the chat
• No creating groups, and no group admin
• No stickers or GIFs repository — they can be received and viewed though
• No internal video player — when tapping a video, the external player installed on the device will open the video
• Polls, events, group invites and live location show as labels — you can't create or answer them
• Telegram: no secret chats
• Signal: no avatars, and a location goes as a map link, since Signal has no location message of its own
• WhatsApp: needs the official app on the device, and it has to be online to load old messages

Logging in

The login screen has one tab per service. One is enough; the others can be added later from ⋮ → Link account.

Telegram

1. Type your phone number with country code and tap Send code.
2. Enter the code Telegram sends you, in the Telegram app on another device or by SMS.
3. If your account has two-step verification, type its password.

Signal

The Signal tab opens Set up Signal. Either:

• Standalone — type your number, tap Send code, confirm Replace Signal?, then enter the code from the SMS and tap Verify and register. No Signal app needed, but that number is signed out of the official app.
• With the Signal app on this device — tap Or link to the Signal app on this device, then in Signal open Settings → Linked devices, tap + and scan the code UniChat shows.

Signing up here only shows chats with people from your device's contacts who let others find them by number on Signal. For the rest, tap ⋮ → Manage accounts, tap the Signal row and type your Signal PIN. Old messages never come back, and that's by Signal's design.

WhatsApp

1. Scan the QR code with the device that runs your WhatsApp (WhatsApp → Settings → Linked devices → Link a device), or type your phone number with country code, tap Get pairing code and enter it in the WhatsApp notification.
2. Codes refresh on their own, so whatever is on screen is always valid.
3. Recent messages sync in seconds; opening a chat pulls older ones from your other device, which has to be online.

Building

Clone the repo and run:

./build.sh                   # full build: Go bridge + aar + release APK
./build.sh --apk-only        # Kotlin/resource changes only (much faster)
./build.sh --no-install      # don't install onto a connected device afterwards

Everything else is fetched and built automatically. The first run is slow — it compiles TDLib, OpenSSL and libsignal from source — but only once; after that the results are cached. Every build is a release build and drops the APK in the repo root as unichat-<version>.apk.

Third-party libraries are checked once a week and picked up automatically.

A build installs automatically when a device is attached.

Telegram needs an app id of your own, which is not in this repo. Get one at my.telegram.org → API development tools (platform Android), then:

cp telegram.properties.template telegram.properties   # then fill it in

Donate

Please consider donating to the UniChat project:

https://paypal.me/fulalas